| 摘要 |
A seat reclining apparatus includes a base plate, a ratchet plate, guide grooves formed on the base plate, lock members installed in the guide grooves and guided thereby between engaged and disengaged positions, a first cam positioned between the base plate and the ratchet plate and rotates relative thereto by an operation of an operating member between locked and unlocked positions, and a single second cam which presses one of the lock members to the engaged position by receiving a force from the first cam when the first cam rotates from the unlocked position to the locked position, wherein the single second cam is positioned in one of the guide grooves that serves as a second-cam accommodating guide groove, and the single second cam can come in sliding contact with an inner surface of the one of the guide grooves. |
